A5085823900- Atmospheric chemistry and aerosols
- Air Quality Monitoring and Forecasting
- Atmospheric Ozone and Climate
- Air Quality and Health Impacts
- Spectroscopy and Laser Applications
- Atmospheric aerosols and clouds
- Indoor Air Quality and Microbial Exposure
- Advanced Chemical Sensor Technologies
- Laser-induced spectroscopy and plasma
- Vehicle emissions and performance
- Analytical chemistry methods development
- Atmospheric and Environmental Gas Dynamics
- Mass Spectrometry Techniques and Applications
- Ion-surface interactions and analysis
- Gas Sensing Nanomaterials and Sensors
- TiO2 Photocatalysis and Solar Cells
Institut national de l'environnement industriel et des risques
2023
Centre National de la Recherche Scientifique
2015-2021
Institut de Recherches sur la Catalyse et l'Environnement de Lyon
2016-2021
Forum Réfugiés - Cosi
2021
Université Claude Bernard Lyon 1
2020-2021
Catalytic Materials (United States)
2019
Aix-Marseille Université
2015-2018
Laboratoire de Chimie Bactérienne
2016-2017
Northern China is regularly subjected to intense wintertime "haze events", with high levels of fine particles that threaten millions inhabitants. While sulfate a known major component these haze particles, its formation mechanism remains unclear especially under highly polluted conditions, state-of-the-art air quality models unable reproduce or predict field observations. These conditions are generally characterized by simultaneous emissions SO2 and photosensitizing materials. In this study,...
Photocatalytic paints based on titanium dioxide (TiO2) nanoparticles represent a promising treatment technology for cleaning the air at our dwellings. A few studies have shown that instead of elimination harmful indoor pollutants production carbonyl compounds occurs from photocatalytic paints. Herein, we report unexpectedly high concentrations volatile organic (VOCs) released upon irradiation which are meant to clean The VOCs were measured continuously and online by PTR-ToF-MS (Proton...
Abstract. Hyphenated laser ablation–mass spectrometry instruments have been recognized as useful analytical tools for the detection and chemical characterization of aerosol particles. Here we describe performances a ablation particle time-of-flight mass spectrometer (LAAP-ToF-MS) which was designed aerodynamic sizing using two 405 nm scattering lasers composition single via ablation/ionization by 193 excimer in bipolar with resolving power m/Δm > 600.We laboratory based optimization...
Abstract We investigated the photosensitizing properties of secondary organic aerosol (SOA) formed during hydroxyl radical (OH) initiated oxidation naphthalene. This SOA was injected into an flow tube and exposed to UV radiation gaseous volatile compounds or sulfur dioxide (SO 2 ). The particles were observed grow in size by photosensitized uptake d‐limonene β‐pinene. In presence SO , a production (0.2–0.3 µg m −3 h −1 ) sulfate at all relative humidity (RH) levels. Some also on dark,...
Heterogeneous reaction of gas phase NO2 with atmospheric humic-like substances (HULIS) is potentially an important source volatile organic compounds (VOCs) including nitrogen (N)-containing compounds, a class brown carbon emerging importance. However, the role ubiquitous water-soluble aerosol components in this multiphase chemistry, namely nitrate and iron ions, remains largely unexplored. Here, we used secondary electrospray ionization ultrahigh-resolution mass spectrometry for real-time...
The photosensitized chemistry of three aromatic ketones (xanthone, flavone, and acetophenone) also secondary organic aerosols (SOAs) arising from the photo-oxidation naphthalene was investigated by means transient absorption spectroscopy.
Our laboratory experiments reveal a decrease in light backscattering by reactive uptake of isoprene epoxydiols on sulfate aerosol compared with inorganic sulfate, which can aid quantifying the direct forcing organic/inorganic sulfates.
Abstract. Hyphenated laser ablation-mass spectrometry instruments have been recognized as useful analytical tools for the detection and chemical characterization of aerosol particles. Here we describe performances a Laser Ablation Aerosol Particle-Time-of-Flight Mass Spectrometer (LAAP-ToF-MS) which was designed aerodynamic particle sizing using two 405 nm scattering lasers composition single via ablation/ionization by 193 excimer in bipolar time-of flight mass spectrometer with resolving...